wear-resisting Sandblasting hose It is a key component that has very strict quality standards and is related to vehicle and life safety. In addition to the resistance to brake oil, the rubber hose of the brake system also needs to have excellent anti-aging function and the characteristics of moisture infiltration in the body. Before, Abrasion resistant sand blasting hose The commonly used raw material of inner glue is styrene butadiene rubber. Due to the occurrence of maintenance free cars, the increase of working temperature of brake system fluid during operation and the application of high boiling point brake system fluid, EPDM or EPDM/butyl rubber has the development trend of styrene based plastics.
The inner glue and outer glue layer of wear-resistant sandblasting hose are mostly made of ethylene propylene diene monomer (EPDM) raw materials. The middle glue in the middle of the double-layer braided lifting layer is natural glue. The lifting layer is made of polyester, acrylic emulsion or polyester chemical fiber. The inner glue can be made of more compression resistant polyester, and the outer glue can also be made of chlorosulfonated polyethylene plastic.
Abrasion resistant sand blasting hose has developed rapidly in China. The annual production of Nanjing alone has exceeded 800 thousand pieces/a, and has become a supporting product for cars and light vehicles, accounting for more than 50% of the sales market of rubber hoses for braking systems in China.
Power steering wear-resistant sandblasting hose
The contact material of the power steering wear-resistant sandblasting hose is mineral oil, with good temperature resistance and firm connector position. The recent development trend of foreign automobile power steering system software is to select high-pressure water pump, and complete the miniaturization and high load rate of the pump. The wear-resistant sandblasting hose is specified to improve the temperature resistance and durability. The internal adhesive has excellent wear resistance, and the external adhesive has wear resistance, high temperature resistance, and weather resistance. The new structure of hydraulic steering wear-resistant sandblasting hose shall use hydrogenated nitrile rubber as the inner glue, polyester as the upper layer, and chlorosulfonated polyethylene plastic as the outer glue. Compared with the traditional wear-resistant sandblasting hose, the service life of this kind of wear-resistant sandblasting hose can be increased by more than twice at 140 ℃. In order to improve the temperature resistance, the power steering wear-resistant sandblasting hose is also used with fluorine glue. However, since fluorine glue is very easy to react with some additives in the oil, its use is limited.
Turbocharged wear-resistant sandblasting hose
Overseas, turbocharging is wear-resistant Sandblasting hose At the present stage, the whole plastic structure is selected. The inner glue is composed of fluorine glue and silica gel with good temperature resistance. The improved layer is made of high toughness aromatic fluorobenzene chemical fiber knitwear, and the outer glue is silica gel.
